How is the line defined in the drawing?
A line has length, width, tone, and texture. It may divide space, define a form, describe contour, or suggest direction. There are, of course, line art drawings and even the most abstract painting uses line as a foundation.
What are contour lines and how are they used in a drawing?
Contour line drawing involves only drawing the outline of an object, without any shading. When you do contour lines in art, you should spend the majority of the time looking at the object, not your paper, in order to improve your hand-eye coordination and really get a good sense of what the object looks like.
What is the basic difference between a contour line and a Formline?
Answer. is that contour is an outline, boundary or border, usually of curved shape while line is a path through two or more points (compare ‘segment’ ); a continuous mark, including as made by a pen; any path, curved or straight or line can be (obsolete) flax; linen, particularly the longer fiber of flax.
What are the factors on which contour lines are based?
The contour interval depends upon the general topography of the terrain. In flat ground, contours at small intervals are surveyed to depict the general slope of the ground whereas high hills can only be depicted with contours at larger contour interval.
What are the uses of contouring?
Uses of the Contour Lines
- To estimate the water storage capacity, back water limit and max .
- Volume of the proposed excavation wok,
- To decide whether certain location is visible from another location,
- To decide exact line of railway or road way haing safe slope,
- To determine the ground water level from contours of ground water.
Which method of contouring is suitable in hilly area?
Tacheometric method
What is direct method of contouring?
Direct method- In direct method contour to be plotted is actually traced on the ground. These points are plotted on ground and contours are marked through them. This method is fallowed where great accuracy is required. The indirect method is less tedious and speedy as compared to the direct method.
What is a contour interval on a map?
A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.
What is the term used for an imaginary line on the ground joining points of equal elevation?
Explanation: A Contour is an imaginary line on the ground joining the points of equal elevation. It is a line in which the surface of the ground is interested in a level surface. A Contour line is a line on the map representing a contour. 4.
Is a line lying in a level surface?
Explanation: A level line is a line lying in a level surface. It is, therefore, normal to the plumb line, at all points. Explanation: Horizontal plane through a point is a plane tangential to the level surface at that point. It is, therefore, perpendicular to the plumb line through the point.
Which of the following is a classification based on the instrument used?
Which of the following is a classification based on the instrument used? Explanation: Topographic surveying, Hydrographic surveying, Cadastral surveying classification is based on the nature of field survey. Traverse surveying, chain surveying is classified based on the type of instrument used.
Which process involves more Labour work?
Explanation: When compared to the three point problem, the solution obtained from two point problem involves more labour work as speed is the first priority. Explanation: Lehman’s process, also known as trial and error process, involves a lot of trial and error, which makes it a tedious process.
What is manual Labour mean?
Manual labour (in British English, manual labor in American English) or manual work is physical work done by humans, in contrast to labour by machines and working animals. Thus there is a partial but significant correlation between manual labour and unskilled or semiskilled workers.
How many ways can you solve 3 point problems?
There are several methods for solution of the three point problem: (i) trial and Error method, (ii) mechanical method, (iii) graphical method, (iv)Analytical method and (v) geometrical construction method.
What is a three point problem?
: the problem of locating the point of observation from the observed angles subtended by three known sides of a triangle either by mathematical calculation or by plotting with a station pointer.
What is two point problem in surveying?
In the two-point problem, two points are sighted from other point corresponding to the points given in plane table sheet. Here two cases are to be discussed. As shown in fig. A and B are the two points corresponding to the points a and b.